no offense but if you look at the initial burn marks on the hood, its right where the battery sits...im assuming a rat or rodent got up in there and got zapped or something and everything else just started to burn....this is why i typically relocate my battery to the trunk...atleast if it was in the trunk you could have salvaged the motor tranny and wiring harness....check out ur ecu, if the ecu is dead its likely your battery did start the fire.